Snapshot `snap1` is published currently:
 * filesystem:hardlink:./maverick [amd64, i386] publishes {main: [snap1]: Snapshot from mirror [gnuplot-maverick]: http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/ maverick}
 * filesystem:symlink:./maverick [amd64, i386] publishes {main: [snap1]: Snapshot from mirror [gnuplot-maverick]: http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/ maverick}
ERROR: unable to drop: snapshot is published